Re-add IRC link

Author: awwright

index.html

@@ -62,5 +62,7 @@ <h2>More</h2>
 	<ul>
 		<li>the <a href="http://github.com/json-schema-org/json-schema-spec">GitHub repo</a></li>
 		<li>the <a href="https://groups.google.com/forum/#!forum/json-schema">Google Group</a></li>
+		<li>the <a href="irc://chat.freenode.net/json-schema">IRC channel</a> (<a href="https://webchat.freenode.net/?channels=json-schema">Freenode Webchat</a>)</li>
+
 	</ul>
 </div>